package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

/**
 * @author 蔡心怡
 * @version 1.0
 */
/**
 * 集中处理所有异常
 *
 * */
@Slf4j
// 下面两个注解可由 @RestControllerAdvice 这一个注解代替
//@RestController
//@ControllerAdvice
@RestControllerAdvice(basePackages = "com.atguigu.gulimall.product.controller")
public class GulimallExceptionControllerAdvice {

    // 用于处理数据校验异常
    @ExceptionHandler(value= MethodArgumentNotValidException.class)
    public R handleValidException(MethodArgumentNotValidException e) {
        log.error("数据校验出现问题{},异常类型：{}", e.getMessage(),e.getClass());
        BindingResult bindingResult = e.getBindingResult();
        Map<String, String> errorMap = new HashMap<>();
        bindingResult.getFieldErrors().forEach((fieldError)->{
            errorMap.put(fieldError.getField(), fieldError.getDefaultMessage());
        });
        return R.error(BizCodeEnum.VAILD_EXCEPTION.getCode(), BizCodeEnum.VAILD_EXCEPTION.getMsg()).put("data", errorMap);
    }

    // 用于处理所有抛出的异常
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){

        return R.error(BizCodeEnum.UNKNOW_EXCEPTION.getCode(), BizCodeEnum.VAILD_EXCEPTION.getMsg());
    }
}
